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Air Compressors

  1. #26

    Re: Air Compressors


    Was looking at the Husky, Do Tell, do you like it? How noisy is it?
    Thanks

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  2. #27
    Angry Gumball RandyO's Avatar
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    Re: Air Compressors

    I'm bumping this thread, I have a small portable Ridgid twin tank compressor (oil type) but it is only about 1 hp ? One of the things I want to upgrade, is a stationary compressor

    I was in Tractor Supply today, (didn't have what I was looking for) but I did walk thru the compressor aisle, and they have an assortment of Ingersoll Rand compressors: 5hp "reciprocating" 80 gal tank $1150; 5hp "single stage twin cylinder" 60 gal tank $800; 7.5hp two stage 80gal tank $2200 ; 5hp 60gal "high capacity" (what ever that means) $1000, and a Dewalt 3.7 RHP w 60 gal tank for $730

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  3. #28
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    Re: Air Compressors

    Quote Originally Posted by nhbubba View Post
    What do you like for ratchets?
    Well, 4 years later I suppose I could answer you. I'm still using my Milwaukee M12 cordless ratchets. Never upgraded to the brushless ones as I think the heads on them are far too bulky. At work I also have a 1/4" brushless hex drill/driver, 1/4" brushless hex impact, and a 3/8" brushless compact impact gun. Oh, and a 1/2" brushless drill, all M12.

    At home I have an assortment of Milwaukee M12 and M18 stuff.




    Also, I bought this compressor for home: https://www.lowes.com/pd/Kobalt-QUIE...sor/1001014062

    It's really impressively quiet. Like, walk outside the garage, leave the door open and you can barely hear it quiet.

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    Last edited by golden chicken; 06-02-21 at 06:51 PM.
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  4. #29
    Changes come butcher bergs's Avatar
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    Re: Air Compressors

    Is this where I can give away my old Craftsman buzzer....oops, just noticed as I was typing it's even worse, it's a Coleman Powermate

    5hp, 25gal

    5.6 - 8.2 CFM

    She might be a screamer but she's free and she works!

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  5. #30
    Angry Gumball RandyO's Avatar
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    Re: Air Compressors

    Is it worth getting a 3 phase converter to run a 3 phase compressor ? in my grinder thread, someone mentioned that to run a 3 phase bench grinder

    also, what is reliability of 3 phase converters, a client of mine just had to replace one, I believe he uses it to run a compressor and maybe some woodworking stuff

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  6. #31
    Burns retinas nhbubba's Avatar
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    Re: Air Compressors

    Quote Originally Posted by golden chicken View Post
    Well, 4 years later I suppose I could answer you. I'm still using my Milwaukee M12 cordless ratchets.
    Somehow I figured that out. At some point over the years I broke down and bought an M12 ratchet. I believe mine is the non-brushless too. It was an open box or something; a fleabay pickup. I love it. Use it all the time.

    Unfortunately this now means I have like 4-5 different battery systems now.

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  7. #32
    Fast is contagious JettaJayGLS's Avatar
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    Re: Air Compressors

    Well, since this got bumped, looking for something small and powerful I can put in the back of the van. Must be able to seat a tubeless bicycle tire, meaning it needs to have a tank and the ability to build to a high pressure. Can be AC or DC power (prefer AC so I can use it around the house too). Needs to be very small, preferably something with a rectangular footprint and less than 10 inches wide. I got a shelf in mind for it.

    I imagine offroaders/overlanders might know of a solution?

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  8. #33
    Angry Gumball RandyO's Avatar
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    Re: Air Compressors

    Quote Originally Posted by JettaJayGLS View Post
    Well, since this got bumped, looking for something small and powerful I can put in the back of the van. Must be able to seat a tubeless bicycle tire, meaning it needs to have a tank and the ability to build to a high pressure. Can be AC or DC power (prefer AC so I can use it around the house too). Needs to be very small, preferably something with a rectangular footprint and less than 10 inches wide. I got a shelf in mind for it.

    I imagine offroaders/overlanders might know of a solution?
    small tanks are easy to make, just find a small tankless compressor to connect

    tanks can be made with pvc pipe and an end cap solvent welded to each end, drill & install proper fittings 8" pvc = 2.63 gal/ft

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  9. #34
    High maintenance priss
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    Re: Air Compressors

    Quote Originally Posted by JettaJayGLS View Post
    Well, since this got bumped, looking for something small and powerful I can put in the back of the van. Must be able to seat a tubeless bicycle tire, meaning it needs to have a tank and the ability to build to a high pressure. Can be AC or DC power (prefer AC so I can use it around the house too). Needs to be very small, preferably something with a rectangular footprint and less than 10 inches wide. I got a shelf in mind for it.

    I imagine offroaders/overlanders might know of a solution?
    If you want a small, well built unit: the Makita MAC compressors are pretty good. They are the oil type and relatively quiet. This is the smallest one: https://www.makitatools.com/products/details/MAC700 I have it's bigger brother and its a nice machine.

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  10. #35
    Fast is contagious JettaJayGLS's Avatar
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    Re: Air Compressors

    Quote Originally Posted by keeena View Post
    If you want a small, well built unit: the Makita MAC compressors are pretty good. They are the oil type and relatively quiet. This is the smallest one: https://www.makitatools.com/products/details/MAC700 I have it's bigger brother and its a nice machine.
    Still looks a bit too big. Looking for something like this, but 110v.
    https://www.viaircorp.com/rvs-portables/300p-rvs

    Something like this could do the trick too.
    https://www.amazon.com/PORTER-CABLE-...language=en_US

    Want to be able to take it in an out of that shelf on the right side and plug it right into that outlet.

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  11. #36
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    Re: Air Compressors

    Quote Originally Posted by JettaJayGLS View Post
    Still looks a bit too big. Looking for something like this, but 110v.
    https://www.viaircorp.com/rvs-portables/300p-rvs

    Something like this could do the trick too.
    https://www.amazon.com/PORTER-CABLE-...language=en_US
    Gotcha. The Makita I linked is the only small compressor I'd consider; don't have experience with anything smaller. Viair stuff is nice; I've been drooling over their constant-duty onboard air systems in my camper.

    I didn't mention it earlier since its not a compressor: but would a high-pressure CO2 tank work? I use one in my camper for tires at trackdays mostly; occasionally bring in the house for small nailing jobs. I refill mine (15lb) once every couple of years. Nice to not need any power, but prices for these systems have doubled in the last few years. Capacity. Dimensions.

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  12. #37
    (4) Try not to be a dick. PurplePackage's Avatar
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    Re: Air Compressors

    Quote Originally Posted by MUZ720 View Post
    Home shop only buget is $350 or so. Just want to drive.air ratchets. If I need impacts i have a great electric one.
    skate where the puck is going
    https://smile.amazon.com/Milwaukee-2.../dp/B006CSRBTC
    a lot less than $350 and no hoses to tangle

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  13. #38
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    Re: Air Compressors

    Quote Originally Posted by PurplePackage View Post
    skate where the puck is going
    https://smile.amazon.com/Milwaukee-2.../dp/B006CSRBTC
    a lot less than $350 and no hoses to tangle
    I have a Milwaukee M12 3/8" cordless ratchet and a Milwaukee M18 1/2" impact gun. They are way, way, way better than using their pneumatic equivalents. I think if you had big money to spend on really high CFM compressors and quality pneumatic tools you might be able to find similar success, but at the cheap end of the price range battery is just so much better now.

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  14. #39
    Angry Gumball RandyO's Avatar
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    Re: Air Compressors

    I'm looking for something that can sustain sandblasting, is 5hp enough ?

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  15. #40
    Backwoods lobster boy number9's Avatar
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    Re: Air Compressors

    Quote Originally Posted by RandyO View Post
    I'm looking for something that can sustain sandblasting, is 5hp enough ?
    Most hp ratings are bullshit. I'd compare cfm ratings

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  16. #41
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    Re: Air Compressors

    Quote Originally Posted by number9 View Post
    Most hp ratings are bullshit. I'd compare cfm ratings
    Agreed. Further: I think many consumer-level products list their theoretical CFM which based on the volume of the pump, not the actual CFM which is produced at the business end (ACFM). Gotta love marketing wank.

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  17. #42
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    Re: Air Compressors

    Quote Originally Posted by number9 View Post
    I have a Milwaukee M12 3/8" cordless ratchet and a Milwaukee M18 1/2" impact gun. They are way, way, way better than using their pneumatic equivalents. I think if you had big money to spend on really high CFM compressors and quality pneumatic tools you might be able to find similar success, but at the cheap end of the price range battery is just so much better now.
    If you use them all the time I could totally understand battery. I use them so infrequently that pneumatic makes more sense.

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  18. #43
    (4) Try not to be a dick. PurplePackage's Avatar
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    Re: Air Compressors

    PF did a small inflator review that might be worth a watch. #vanlife

    https://www.youtube.com/watch?v=kTpSgUyyBA8

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  19. #44
    Angry Gumball RandyO's Avatar
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    Re: Air Compressors

    Quote Originally Posted by RandyO View Post
    Is it worth getting a 3 phase converter to run a 3 phase compressor ? in my grinder thread, someone mentioned that to run a 3 phase bench grinder

    also, what is reliability of 3 phase converters, a client of mine just had to replace one, I believe he uses it to run a compressor and maybe some woodworking stuff
    I need to know more about this, after researching the CFM required for blasting, looks like I'll want a compressor that is 10hp minimum, almost all can be wired for 3 phase

    tell me what this does to power consumption vs 220 single phase

    besides smoother running quieter longer lasting, what are other advantages to 3 phase

    do these 3phase converters hum like a fluorescent light ballast on steroids ?

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  20. #45
    (4) Try not to be a dick. PurplePackage's Avatar
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    Re: Air Compressors

    Quote Originally Posted by RandyO View Post
    I need to know more about this, after researching the CFM required for blasting, looks like I'll want a compressor that is 10hp minimum, almost all can be wired for 3 phase

    tell me what this does to power consumption vs 220 single phase

    besides smoother running quieter longer lasting, what are other advantages to 3 phase

    do these 3phase converters hum like a fluorescent light ballast on steroids ?
    can't be answered in simple terms.
    power consumption in 3-phase is no longer in watts, but volt-amps and power factor. there is a very slight loss of energy in both a VFD and rotary conversion. The good news is that you will still save some money vs a single phase motor:

    http://www.vfds.org/vfd-savings-calculator.html

    advantages - https://www.electricaltechnology.org...gle-phase.html

    converters make a sound, but it depends on which one you have! rotary converter or cheap VFD? what's the frequency, Kenneth?

    grab a beer and watch a few videos that explain whats going on and what to expect with a converter:
    https://www.youtube.com/watch?v=0FkWJbr4O1w
    https://www.youtube.com/watch?v=gTfW9cxM34o
    https://www.youtube.com/watch?v=x882vvX_L7Y
    https://youtu.be/J86QK0Njfv4?t=119

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  21. #46
    Lifer jasnmar's Avatar
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    Re: Air Compressors

    Quote Originally Posted by PurplePackage View Post
    can't be answered in simple terms.
    power consumption in 3-phase is no longer in watts, but volt-amps and power factor.

    How is this different in single phase?

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  22. #47
    (4) Try not to be a dick. PurplePackage's Avatar
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    Re: Air Compressors

    Quote Originally Posted by jasnmar View Post
    How is this different in single phase?
    single phase
    watts=volts x amps x power factor

    3-phase
    watts=√3 x volts x amps x power factor

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  23. #48
    Lifer jasnmar's Avatar
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    Re: Air Compressors

    Quote Originally Posted by PurplePackage View Post
    single phase
    watts=volts x amps x power factor

    3-phase
    watts=√3 x volts x amps x power factor
    So a 10HP motor connected to 3 phase will use √3 more power if it is connected to a 3 phase connection than if it is run single phase?

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  24. #49
    (4) Try not to be a dick. PurplePackage's Avatar
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    Re: Air Compressors

    Quote Originally Posted by jasnmar View Post
    So a 10HP motor connected to 3 phase will use √3 more power if it is connected to a 3 phase connection than if it is run single phase?
    10HP motor is a 10HP motor. It will take 10HP to run it. That is 7.8kW at 100% efficiency.

    Use this calc: https://www.jcalc.net/motor-current-calculator

    10HP motor (240v) on 3-phase draws 22.22 amps with a .85 PF
    10HP motor (240v) on single phase draws 38.48 amps with an equal .85 PF

    You can see how 3-phase is much more efficient at spinning the motor.

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  25. #50
    Angry Gumball RandyO's Avatar
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    Re: Air Compressors

    Quote Originally Posted by PurplePackage View Post
    10HP motor is a 10HP motor. It will take 10HP to run it. That is 7.8kW at 100% efficiency.

    Use this calc: https://www.jcalc.net/motor-current-calculator

    10HP motor (240v) on 3-phase draws 22.22 amps with a .85 PF
    10HP motor (240v) on single phase draws 38.48 amps with an equal .85 PF

    You can see how 3-phase is much more efficient at spinning the motor.
    so a 3 phase motor uses 42% less energy than a single phase motor ? how much energy loss in the converter ?

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    RandyO
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